#include <stdio.h>
int main(int argc, char const *argv[])
{
    unsigned long long int sum = 1;

    for (int i = 0; i < 62; i++)
    {
        sum *= 2;
    }
    
    printf("%llu 亿years\n", sum / 365 / 24 / 3600 / 10000 / 10000 * 2 * 2);
    return 0;
}
